There is no obligation as a CPL holder and I don't believe there is an obligation for a OC'er either. However, as a non-CPL holder you cannot conceal a loaded pistol in your vehicle. If you are going to place it in your glovebox it must be unloaded...
RCW 9.41.050 – Carrying firearms.
(2)(a) A person shall not carry or place a loaded pistol in any vehicle unless the person has a license to carry a concealed pistol and: (i) The pistol is on the licensee's person, (ii) the licensee is within the vehicle at all times that the pistol is there, or (iii) the licensee is away from the vehicle and the pistol is locked within the vehicle and concealed from view from outside the vehicle. (b) A violation of this subsection is a misdemeanor.
RCW 9.41.050 – Carrying firearms.
(2)(a) A person shall not carry or place a loaded pistol in any vehicle unless the person has a license to carry a concealed pistol and: (i) The pistol is on the licensee's person, (ii) the licensee is within the vehicle at all times that the pistol is there, or (iii) the licensee is away from the vehicle and the pistol is locked within the vehicle and concealed from view from outside the vehicle. (b) A violation of this subsection is a misdemeanor.